make allmodconfig && make W=1 C=1 reports:
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/dma/qcom/hdma_mgmt.o
WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/dma/qcom/hdma.o
Add the missing invocations of the MODULE_DESCRIPTION() macro, using
the descriptions from the associated Kconfig items.
Signed-off-by: Jeff Johnson <quic_jjohnson@xxxxxxxxxxx>